28495000

素因数分解:

$2^3\times 5^4\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 68884200

約数和(自身を除く): 40389200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 139, 164, 200, 205, 250, 278, 328, 410, 500, 556, 625, 695, 820, 1000, 1025, 1112, 1250, 1390, 1640, 2050, 2500, 2780, 3475, 4100, 5000, 5125, 5560, 5699, 6950, 8200, 10250, 11398, 13900, 17375, 20500, 22796, 25625, 27800, 28495, 34750, 41000, 45592, 51250, 56990, 69500, 86875, 102500, 113980, 139000, 142475, 173750, 205000, 227960, 284950, 347500, 569900, 695000, 712375, 1139800, 1424750, 2849500, 3561875, 5699000, 7123750, 14247500, 28495000]

約数ペア:

[(1, 28495000), (2, 14247500), (4, 7123750), (5, 5699000), (8, 3561875), (10, 2849500), (20, 1424750), (25, 1139800), (40, 712375), (41, 695000), (50, 569900), (82, 347500), (100, 284950), (125, 227960), (139, 205000), (164, 173750), (200, 142475), (205, 139000), (250, 113980), (278, 102500), (328, 86875), (410, 69500), (500, 56990), (556, 51250), (625, 45592), (695, 41000), (820, 34750), (1000, 28495), (1025, 27800), (1112, 25625), (1250, 22796), (1390, 20500), (1640, 17375), (2050, 13900), (2500, 11398), (2780, 10250), (3475, 8200), (4100, 6950), (5000, 5699), (5125, 5560)]